The version of the RMI Connector Protocol understood by this connector server. This is a string with the following format:
The protocol-version is a series of two or more non-negative integers separated by periods (.). An implementation of the version described by this documentation must use the string 1.0 here.
After the protocol version there must be a space, followed by the implementation name. The format of the implementation name is unspecified. It is recommended that it include an implementation version number. An implementation can use an empty string as its implementation name, for example for security reasons.
a string with the format described here.
RemoteException - if there is a communication exception during the remote method call.